Using influxDB1.8, icinga and grafana.
1- I made modifications on the names of the monitored hosts (via icinga)
2- I changed the Retention policy [3 Months] as default RP -> I found that the shard group duration is automatically modified to 24h --> then I changed it again to 7days
–> in Grafana I used both retention policies in the queries
–> as the Hostnames are used as variable in Grafana, I could see a complete continuity of graphs in time once I choose the new name: it means even with the modified new names, I could see old performance Data which was attributed to the old Names)
After ~ 1 day, everything is unfortunately changed -> I can’t see any old performance Data anymore. Only when I manually use the old hostnames in the query (with previous RP)
Can anyone please explain to me what happend? Why I failed to maintain the continuety of the graphs after changing hostnames?
Thanks in advance!